H - Electricity – 01 – J
Patent
H - Electricity
01
J
313/81
H01J 1/62 (2006.01) H01J 63/04 (2006.01) H05B 33/10 (2006.01) H05B 33/12 (2006.01) H05B 33/20 (2006.01) H05B 33/28 (2006.01)
Patent
CA 1227522
ELECTRICAL CIRCUITS AND COMPONENTS ABSTRACT It is discovered that a liquid dispersion of polymer powder particles, predominantly of polyvinylidene fluoride, simultaneously: a) can suspend electrical property additives, such as crystalline, hard, dense particles of generally spherical shape, uniformly in desired concentrations; b) while containing a useful concentration of any of a wide range of such particles, can be deposited by high shear transfer to a substrate in accurately controllable thickness and contour; c) when so deposited can be fused into a continuous uniform film which has low absorptivity, e.g., of moisture, and acts as a barrier film; d) where desired, can, as one layer, be fused with other such layers, containing other electrical property additives, to form a monolithic electrical component; and, e) in general, can meet all req??rements for the making of many useful electrical circuit components, including electroluminescent lamps, by printing and coating techniques with a high degree of accuracy and controllability. The discovery can be employed to form products that are highly resistant to ambient heat and moisture. The invention provides, in particular, circuit components and electroluminescent lamps that contain light-emitting phosphors and covering layers which have unusual durability, moisture resistance, and light transmissivity, using simple screen printing and doctor blade coating techniques.
473478
Harper William P.
Lunt Michael S.
Rogers Corporation
Smart & Biggar
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